Basic consideration of MPEG-2 coded file entropy and lossless re-encoding

Kazuo Ohzeki, Yuǎn Yù Wei, Eizaburo Iwata, Ulrich Speidel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Re-encoding of once compressed flies is one of the difficult challenges in measuring the efficiency of coding methods. Variable length coding with a variable source delimiting scheme is a promising method for improving re-encoding efficiency. Analyses of coded flies with fixed length delimiting and with variable length delimiting are reviewed. Motion vector codes of MPEG-2 encoded files are modified as a variable-to-variable coding point of view. Length, bit-rates, and varieties of videos are examined. The largest file is 16 seconds of D1 full size at 720 ×480 among five video files. By entropy evaluation, an improvement of almost 20% in coding efficiency over the conventional MPEG-2 is obtained.

Original languageEnglish
Title of host publicationProceedings of the International Multiconference on Computer Science and Information Technology, IMCSIT 2010
Pages741-748
Number of pages8
Publication statusPublished - 2010 Dec 1
Event2010 International Multiconference on Computer Science and Information Technology, IMCSIT 2010 - Wisla, Poland
Duration: 2010 Oct 182010 Oct 20

Publication series

NameProceedings of the International Multiconference on Computer Science and Information Technology, IMCSIT 2010
Volume5

Conference

Conference2010 International Multiconference on Computer Science and Information Technology, IMCSIT 2010
CountryPoland
CityWisla
Period10/10/1810/10/20

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ASJC Scopus subject areas

  • Computer Science (miscellaneous)
  • Information Systems

Cite this

Ohzeki, K., Wei, Y. Y., Iwata, E., & Speidel, U. (2010). Basic consideration of MPEG-2 coded file entropy and lossless re-encoding. In Proceedings of the International Multiconference on Computer Science and Information Technology, IMCSIT 2010 (pp. 741-748). [5679744] (Proceedings of the International Multiconference on Computer Science and Information Technology, IMCSIT 2010; Vol. 5).